Davis, who described the hit from Seattle safety Kam Chancellor as brutal” and one of the hardest he ever has taken in seven NFL seasons, is awaiting final clearance to take part in the regualr season finale.

He had been cleared by an independent neurologist and a team physician to resume non-contact activity Thursday, and could be cleared to play if he passes just one more test - contact simulation.

The need to get Davis back on the field for a win to build momentum going into the playoffs is seen as a priority for the 49ers offense, who lost starting receiver Mario Manningham against the Seahawks. The team placed him on injured reserve Friday, which leaves them without their second-leading receiver going forward.

“Tomorrow he'll go through the final progression,” head coach Jim Harbaugh told the Associated Press via the Press Democrat. “He's on course, but that's something the doctors have full control over.”

“I'm thinking I have to be ready for this game,” Davis said. “That's the way I'm approaching it. There's a lot on the line. No matter what happens, we have to win this game. So my mind is focused on getting out there and helping my teammates win this game any way I can. I'm ready to play.”